Girl who was disrespecting me and I cut ties but still wants to talk and stares?

This girl I met used to be really nice and caring and I felt it was nice and caring in this time frame she also had a 'girlfriend' but after a couple months she started to become very disrespectful calling me insulting things such as pathetic, lame, short and not valuable. I told her 3 times to stop and she apologised but then continued being insulting saying that she's going to 'be famous' and that I'm going to wish I knew her, after the ultimatum I left. I ignored her completely and she told someone that she was upset that she might've hurt my feelings and that she couldn't sleep all night. Nothing excuses her calling me those names and being extremely rude but recently she's been all nervous and starring at me like a puppy expecting me to talk to her or saying sorry but when she said sorry the behaviour continued. Even though she flirts with dudes in front of me. I still see her once a week any advice keep. I have self-respect so talking to her is off the table as there are so many other nicer girls I talk to and hang out with. Maybe just ignore her?

Girl who was disrespecting me and I cut ties but still wants to talk and stares?
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